Glad to hear I’m not the only one!! I only have 2 Group 31 AGM’s from CTC and 300 W solar but haven’t had to plug into shore power since setting it up and that is very convenient when heading out for a day sail. Fridge runs 24/7 but we don’t have heat or air and I have converted most lights to LED but we spend a month or so in the North Channel and no issues so far.
Tom S From: Robert Boyer via CnC-List Sent: Thursday, January 9, 2020 7:24 AM To: cnc-list@cnc-list.com Cc: Robert Boyer Subject: Re: Stus-List Battery Bank Configuration There may come a time that I regret my current battery configuration but I haven’t regretted it for the past 5 years of cruising. I currently have four Group 31 Firefly Oasis carbon foam AGM’s ($500 each) in parallel as one large battery bank. I have 340 watts of flexible (Solbian) solar panels that feed the single large battery bank. I believe that battery combiners and similar devices are more likely to fail than my batteries. (If I ever have a dead battery, I will isolate it and continue to operate with just three until I can replace it. I think the idea of a separate starting battery and the notion of the need to separate batteries into two usable banks is outdated—it was a continuation from a time before reliable batteries were available. I wouldn’t use my system with cheaper batteries.) Bob (currently in Nassau with 75 degree weather!) Bob Boyer s/v Rainy Days C&C Landfall 38 (Hull # 230) (Spending winters in the Bahamas, summers in Baltimore, and somewhere on the ICW in between) blog: dainyrays.blogspot.com email: dainyr...@icloud.com On Jan 4, 2020, at 10:18 PM, Josh Muckley via CnC-List <cnc-list@cnc-list.com> wrote: You're boat is wired wrong or you are misinterpreting the indications. You are absolutely correct that the starter battery should be "spared". Really what "spared" means is that it should always and only be connected to the engine starter. The output of the alternator should be switched by an ACR or echo charge to charge the start battery only after the house batts have sufficient voltage. In the link is a picture of a "better" way to wire a system like yours. If you wanted to install the system as depicted but split the bank of 2 house batteries, you could re-purpose your old/existing 1-all-2 switch such that it separates the 2 house batts shown as a single bank. https://drive.google.com/file/d/1bmc_PsjKHSQKYjy4Jnhl7ZV232MoiOJ2/view?usp=drivesdk Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Sat, Jan 4, 2020, 9:27 PM Peter Cowenhoven via CnC-List <cnc-list@cnc-list.com> wrote: This may be obvious to most of you but came as a surprise to me. I've got a 3 battery bank with 2 deep cycles and 1 starter battery. It's got a 1 All 2 switch. I was testing load and was surprised to see that if you're using 1 or 2 it's also drawing power off the starter battery too. Doesn't this defeat the point. Shouldn't the starter battery be completely spared while not running the engine. Is there a better configuration? Thanks in advance! Peter 84 Landfall 35 Sent from Yahoo Mail on Android _______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray _______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray -------------------------------------------------------------------------------- _______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
